Windmill transmission drive



' May 15 1928 c. ANDREINI WINDMILL TRANSMISSION DRIVE Original iled May 24, 1923 2 Sheets-Sheet 1 fave n50?" 62774620 flnazrez'n z May 15, 1928. v

' C. ANDREINI WINDMILL TRANSMISSION DRIVE oii inal Filed May 24, 1923 2 Sheets-Sheet 2 Fig. 2.

with two toothed wheels (17) Patented May 15, 1928.

oommno ANDREINI, oF-noME, ITALY.

\WIN'DMILL rnansivrrssron DRIVE,

Original application an Ma '24,',1923, Serial No.:641,218, and in Italy January i, 1 Divided and this application filed January 8, 1925. sear No. 1,272.

The present invention relates to improvements in devices for transm ttlng windmill power to machines substantially consisting in that the upper lengths of two wire cables run-on two fixed pulleys and through the flanges of a sleeve. operated up and down by the fly-Wheel; said lengths being then fixed to' the said flanges,'while the'lower lengths descend vertically downthe main beam of the tower, the upper and lower lengths being connected by means of U- shaped tubular pieces keeping the parallel ends of cables at thesame distance-existing between the pulleys and sleeves flanges, in themiddle of bothU-shaped tubular pieces, rods being fixed transmitting the motion to the machine to be driven.

The device according to the invention has the advantage, even when the efficiency of the windmill is great, to work noiselessly and to be of a simple construction.

-The invention is illustrated by way of exa ple in the accompanying drawings in which: I

mg; of the windmill,

Fig. 3 is a plan view on alarger scale and Fig.4 is a schematic sectional view of the device.

The wind-wheel shaft (16) is provided Fig. 3) in mesh with toothed wheels (18), on which the pivots of connecting rods (37 (Fig. 2) are secured, these rods being at the other end articulated to slide block (29) (Figs. 1, 2, 4), the block sliding by means of pulleys (38) along the guides (28). The gear ratio 1 shows a side view,

I between toothed wheels 17 and 18 (Fig. 3)

I wear of the teeth is the same for all of them.,

varies according to the diameter of the windwheel, so that whatever maybe the species ofwindmill the ratio between the number of teeth of wheels 17 and the main wheels is nearly always constant and each tooth successively is in mesh with different teeth of the driving wheels, so that the unavoidable The constant gear ratio for all species of windmills is calculated on the base of the greatest speed of 14 meters per second the wind-wheel may have and in such a way that, for instance in the case of a pump, in each cylinder a stroke of piston corresponds to said speed, so that the efficiency of the 2 is a front view of the upper part pumps in the case of extraordinary velocities does not diminish.

(Fig; t);c oaxial with maintubular column 2, the tube atv thebottom end bearing a sleeve 68 freely rotatable around tube 67 ndn t liab e o b s f d. 1.o gi ud al. y,

The slide-block 29 is fixed to thetube .67 i

this movement being prevented by a screw;

TheBXternal flanges 70-7( '.of sleeve 6.8

main tubular column 2 I l.1 of the tower is provided with an oil I feeder 72 and the bearing for a shaft 73, two. rope pulleys. 'izl-Jet (Figs. 172) being. wedged thereon, the main tubular column 2 of the tower being between these pulleys. Thevertical internal tangents to the grooves (Fig' 4) projecting through slots (1Q) of I of these two pulleys (74 74 Figs, land coincide with the axis of the bore of flanges fi70 thelower lengths of cable 71 run? ning down vertically along the tubular col? umn2. Both upper and lower lengths of cable 71, .run through two semicircular shaped tubular pieces75-75 (Figs. 1-2).

The lengths of the vertical sections of cables 71 are on same plane passing through the axis of the pivot forthe vertical internal tangents to the grooves of thepulleys 7 and 7 1 and the axis of the bores of flanges 70-70 In the center of the semicircular tubular pieces there are secured two rods 76 and 76 'for thetransmission of motion. 1

The device works as follows:

The wind-wheel by turning round drivesthe slide-block 2911p and down, this motion being transmitted to the hollow rod 67 and sleeve 68 (Fig. 4). l/Vhen sleeve 68 is going up both lower lengths of cable 71 (Figs. 2 and 4) are directly drawn upwards, so that the U-shapedtubular piece 75 (Figs. 1-2) moves the same stretch downwards. When slide-block 68 is going downwards the contrary takes place, i. e. tubular piece 7 5 moves an equal stretch downwards and tubular piece 75 upwards. Through the-rods 7 o76 the motion is transmitted to the ma chine, for instance a pump, arranged down below. in-the tower. 1

The device is'well balanced, the transmisslidably mounted sion of motion even in the case of very eflicient windmills takes place in a simple, noiseless and sure way.

Having now particularly described and ascertained the nature ofiny said invention and in what manner the same is to be perv formed I declare that what I claim is:

1. In a windmill transmission drive, a

block, I reciprocating said block, a tube connected at its upper end with said block, a sleeve carried by the lower end of said tube, a pair of suitablymounted pulleys,'cables passing over said pulleys, the lengths of said cables 'onone side of said pulleys being connected to said sleeve whereby the reciprocating movementtransmitted thereto by said sleeve and block will exert an upward and downward pull on said cables alternately and power transmitting rods connected to the opv posite ends of said cables.

g2. In a windm ll transmission drive, a

slidably mounted block, a pair of driving wheels geared to the shaft of the windmill wheel, driving rods connected eccentrically' with said wheels and with said block whereby the same is reciprocated by said windwheel, a vertic'allydisposed elongated tube connected at its upperend with said block, a sleeve carried by the lower end'ot' said tube,a pairs of suitably mounted pulleys,

cables passing over said pulleys, the lengths of said-cableson one side of said pulleys being connected to said'sleevewher'eby the reciprocating movement transmitted thereto by said sleeve and block will exert an upward and downward pull on said cables altersigned my nam' nately and power transmitting rods connected to the opposite ends ofsaidcables.

said pulleys,

means for vertically f 3. In a Windmill transmission drive, a slidably mounted block,.means for vertically reciprocating said block, a tube connected at its upper end with said block, a sleeve. car- 'ried by the lower-end of said tube, a pair of suitably mounted pulleys, cables passing over one side of said pulleys being connected to said sleeve whereby the reciprocating movement transmitted thereto'by said sleeve and block will exert an upward and downward pull on said cables alternately, tubular semicircular members engaged with the opposite ends of said cables and power transmitting rods loosely connected at their upper ends with said semiircular members.

4. In' windmill "transmission xClIlVB a, main tubular column having near its lower end vertical slots,,a guide arranged at the upper end of said column, a block, pulleys mounted on said block and engaging said guide, an elongated tube connected at its upper end with said block and, extending downwardly through said tubularcolum'n, a sleeve carried by the lower end of said elongated tube,flanges on said sleeve projecting through the vertical slots in said "main column, means for vertically reciprocating said block in said guide together with said tube conn no ANDREINI.

45 the lengths of said cables-on 

